/*
 * Copyright 2015 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.buffer;

import io.netty.util.internal.PlatformDependent;

class UnpooledUnsafeHeapByteBuf extends UnpooledHeapByteBuf {

  /**
   * Creates a new heap buffer with a newly allocated byte array.
   *
   * @param initialCapacity the initial capacity of the underlying byte array
   * @param maxCapacity the max capacity of the underlying byte array
   */
  UnpooledUnsafeHeapByteBuf(ByteBufAllocator alloc, int initialCapacity, int maxCapacity) {
    super(alloc, initialCapacity, maxCapacity);
  }

  @Override
  protected byte[] allocateArray(int initialCapacity) {
    return PlatformDependent.allocateUninitializedArray(initialCapacity);
  }

  @Override
  public byte getByte(int index) {
    checkIndex(index);
    return _getByte(index);
  }

  @Override
  protected byte _getByte(int index) {
    return UnsafeByteBufUtil.getByte(array, index);
  }

  @Override
  public short getShort(int index) {
    checkIndex(index, 2);
    return _getShort(index);
  }

  @Override
  protected short _getShort(int index) {
    return UnsafeByteBufUtil.getShort(array, index);
  }

  @Override
  public short getShortLE(int index) {
    checkIndex(index, 2);
    return _getShortLE(index);
  }

  @Override
  protected short _getShortLE(int index) {
    return UnsafeByteBufUtil.getShortLE(array, index);
  }

  @Override
  public int getUnsignedMedium(int index) {
    checkIndex(index, 3);
    return _getUnsignedMedium(index);
  }

  @Override
  protected int _getUnsignedMedium(int index) {
    return UnsafeByteBufUtil.getUnsignedMedium(array, index);
  }

  @Override
  public int getUnsignedMediumLE(int index) {
    checkIndex(index, 3);
    return _getUnsignedMediumLE(index);
  }

  @Override
  protected int _getUnsignedMediumLE(int index) {
    return UnsafeByteBufUtil.getUnsignedMediumLE(array, index);
  }

  @Override
  public int getInt(int index) {
    checkIndex(index, 4);
    return _getInt(index);
  }

  @Override
  protected int _getInt(int index) {
    return UnsafeByteBufUtil.getInt(array, index);
  }

  @Override
  public int getIntLE(int index) {
    checkIndex(index, 4);
    return _getIntLE(index);
  }

  @Override
  protected int _getIntLE(int index) {
    return UnsafeByteBufUtil.getIntLE(array, index);
  }

  @Override
  public long getLong(int index) {
    checkIndex(index, 8);
    return _getLong(index);
  }

  @Override
  protected long _getLong(int index) {
    return UnsafeByteBufUtil.getLong(array, index);
  }

  @Override
  public long getLongLE(int index) {
    checkIndex(index, 8);
    return _getLongLE(index);
  }

  @Override
  protected long _getLongLE(int index) {
    return UnsafeByteBufUtil.getLongLE(array, index);
  }

  @Override
  public ByteBuf setByte(int index, int value) {
    checkIndex(index);
    _setByte(index, value);
    return this;
  }

  @Override
  protected void _setByte(int index, int value) {
    UnsafeByteBufUtil.setByte(array, index, value);
  }

  @Override
  public ByteBuf setShort(int index, int value) {
    checkIndex(index, 2);
    _setShort(index, value);
    return this;
  }

  @Override
  protected void _setShort(int index, int value) {
    UnsafeByteBufUtil.setShort(array, index, value);
  }

  @Override
  public ByteBuf setShortLE(int index, int value) {
    checkIndex(index, 2);
    _setShortLE(index, value);
    return this;
  }

  @Override
  protected void _setShortLE(int index, int value) {
    UnsafeByteBufUtil.setShortLE(array, index, value);
  }

  @Override
  public ByteBuf setMedium(int index, int value) {
    checkIndex(index, 3);
    _setMedium(index, value);
    return this;
  }

  @Override
  protected void _setMedium(int index, int value) {
    UnsafeByteBufUtil.setMedium(array, index, value);
  }

  @Override
  public ByteBuf setMediumLE(int index, int value) {
    checkIndex(index, 3);
    _setMediumLE(index, value);
    return this;
  }

  @Override
  protected void _setMediumLE(int index, int value) {
    UnsafeByteBufUtil.setMediumLE(array, index, value);
  }

  @Override
  public ByteBuf setInt(int index, int value) {
    checkIndex(index, 4);
    _setInt(index, value);
    return this;
  }

  @Override
  protected void _setInt(int index, int value) {
    UnsafeByteBufUtil.setInt(array, index, value);
  }

  @Override
  public ByteBuf setIntLE(int index, int value) {
    checkIndex(index, 4);
    _setIntLE(index, value);
    return this;
  }

  @Override
  protected void _setIntLE(int index, int value) {
    UnsafeByteBufUtil.setIntLE(array, index, value);
  }

  @Override
  public ByteBuf setLong(int index, long value) {
    checkIndex(index, 8);
    _setLong(index, value);
    return this;
  }

  @Override
  protected void _setLong(int index, long value) {
    UnsafeByteBufUtil.setLong(array, index, value);
  }

  @Override
  public ByteBuf setLongLE(int index, long value) {
    checkIndex(index, 8);
    _setLongLE(index, value);
    return this;
  }

  @Override
  protected void _setLongLE(int index, long value) {
    UnsafeByteBufUtil.setLongLE(array, index, value);
  }

  @Override
  public ByteBuf setZero(int index, int length) {
    if (PlatformDependent.javaVersion() >= 7) {
      // Only do on java7+ as the needed Unsafe call was only added there.
      checkIndex(index, length);
      UnsafeByteBufUtil.setZero(array, index, length);
      return this;
    }
    return super.setZero(index, length);
  }

  @Override
  public ByteBuf writeZero(int length) {
    if (PlatformDependent.javaVersion() >= 7) {
      // Only do on java7+ as the needed Unsafe call was only added there.
      ensureWritable(length);
      int wIndex = writerIndex;
      UnsafeByteBufUtil.setZero(array, wIndex, length);
      writerIndex = wIndex + length;
      return this;
    }
    return super.writeZero(length);
  }

  @Override
  @Deprecated
  protected SwappedByteBuf newSwappedByteBuf() {
    if (PlatformDependent.isUnaligned()) {
      // Only use if unaligned access is supported otherwise there is no gain.
      return new UnsafeHeapSwappedByteBuf(this);
    }
    return super.newSwappedByteBuf();
  }
}
